22681265 has 8 divisors (see below), whose sum is σ = 27467880. Its totient is φ = 17978112.

The previous prime is 22681207. The next prime is 22681271. The reversal of 22681265 is 56218622.

It can be written as a sum of positive squares in 4 ways, for example, as 11916304 + 10764961 = 3452^2 + 3281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22681265 - 2¹⁰ = 22680241 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20264 + ... + 21353.

It is an arithmetic number, because the mean of its divisors is an integer number (3433485).

Almost surely, 2^22681265 is an apocalyptic number.

It is an amenable number.

22681265 is a deficient number, since it is larger than the sum of its proper divisors (4786615).

22681265 is a wasteful number, since it uses less digits than its factorization.

22681265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41731.

The product of its digits is 11520, while the sum is 32.

The square root of 22681265 is about 4762.4851705806. The cubic root of 22681265 is about 283.0669014045.

Adding to 22681265 its reverse (56218622), we get a palindrome (78899887).

The spelling of 22681265 in words is "twenty-two million, six hundred eighty-one thousand, two hundred sixty-five".